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Diss Factsheets
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EC number: 234-766-4 | CAS number: 12032-30-3
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_physical-and-chemical-properties.png)
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From July 12, 2017 to August 03, 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
Test material
- Reference substance name:
- Calcium titanium trioxide
- EC Number:
- 234-988-1
- EC Name:
- Calcium titanium trioxide
- Cas Number:
- 12049-50-2
- Molecular formula:
- Ca.O3Ti
- IUPAC Name:
- Calcium titanium trioxide
- Reference substance name:
- Titanium dioxide
- EC Number:
- 236-675-5
- EC Name:
- Titanium dioxide
- Cas Number:
- 13463-67-7
- Molecular formula:
- O2Ti
- IUPAC Name:
- dioxotitanium
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- Cas Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- Reference substance name:
- Magnesium oxide
- EC Number:
- 215-171-9
- EC Name:
- Magnesium oxide
- Cas Number:
- 1309-48-4
- Molecular formula:
- MgO
- IUPAC Name:
- magnesium oxygen(-2) anion
- Reference substance name:
- Diniobium pentaoxide
- EC Number:
- 215-213-6
- EC Name:
- Diniobium pentaoxide
- Cas Number:
- 1313-96-8
- Molecular formula:
- Nb2O5
- IUPAC Name:
- diniobium pentoxide
- Test material form:
- solid: nanoform, surface-treated
Constituent 1
impurity 1
impurity 2
impurity 3
impurity 4
impurity 5
Results and discussion
Water solubility
- Key result
- Water solubility:
- < 0.3 mg/L
- Conc. based on:
- test mat.
- Temp.:
- 25 °C
- pH:
- 7.59
- Remarks on result:
- other: pH is calculated mean of Day 1 - 3
- Details on results:
- Comparison of individual test results for calcium from tests 1, 2, and 3 indicated that there was no increasing solubility over time and the concentrations of all test solutions do not differ by more than 15 %; therefore, the mean results from tests 1, 2, and 3 were reported as the water solubility value to 1 decimal place. Spike sample recoveries lie within acceptable limits (nominal 100 ± 20 %).
No levels of titanium were observed in any test solutions and spike sample recoveries lie within acceptable limits (nominal 100 ± 20 %).
The lack of observable titanium concentration when compared to the calcium concentrations measured suggests that calcium titanate is soluble at <0.1 mg/L in water. The origin of the 5 mg/L calcium measured (rounded to the nearest mg/L) is unknown. Due to the structure of calcium titanate it is not felt that this level is caused by any dissociation from the calcium titanate molecule and is likely due to residual calcium or impurities.
From the titanium result, the water solubility of calcium titanate in solution is estimated based on correction for molecular weight as 0.1 x 135.4 / 47.87 = 0.28 rounded to <0.3 mg/L.
Analysis of test solutions by Malvern Zetasizer indicated that the test substance did not appear to be dispersed in the test solutions and that the values reported are indicative of solubilised test substance.
Applicant's summary and conclusion
- Conclusions:
- Calcium titanate has a water solubility of <0.3 mg/L at 25°C.
- Executive summary:
A study was undertaken to establish the water solubility of calcium titanate according to the shake flask technique described in OECD Guideline 105 (Water Solubility). No deviation from the protocol was reported. Test item dispersion within the solution was analysed with Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and by Malvern Zetasizer, rendering a water solubility of <0.3 mg/L for calcium titanate at 25°C (corrected for molecular weight). Calcium titanate did not appear dispersed in the test solution and the reported value is indicative of solubilised test material.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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